From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/75063 Path: news.gmane.org!not-for-mail From: "Thomas A. Schmitz" Newsgroups: gmane.comp.tex.context Subject: random background picture in metafun Date: Tue, 13 Mar 2012 15:45:53 +0100 Message-ID: <4F5F5DA1.1050202@uni-bonn.de> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1331649980 5308 80.91.229.3 (13 Mar 2012 14:46:20 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 13 Mar 2012 14:46:20 +0000 (UTC) To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Tue Mar 13 15:46:16 2012 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1S7SzO-00015n-1d for gctc-ntg-context-518@m.gmane.org; Tue, 13 Mar 2012 15:46:14 +0100 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 1E858CB2A2; Tue, 13 Mar 2012 15:46:13 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 7-Pd35Xm8OGW; Tue, 13 Mar 2012 15:46:10 +0100 (CET) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 82830CB291; Tue, 13 Mar 2012 15:46:10 +0100 (CET) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 1009ECB291 for ; Tue, 13 Mar 2012 15:46:09 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id Z7AzOszZ-wf1 for ; Tue, 13 Mar 2012 15:45:54 +0100 (CET) Original-Received: from filter1-til.mf.surf.net (filter1-til.mf.surf.net [194.171.167.217]) by balder.ntg.nl (Postfix) with ESMTP id 5A320CB04D for ; Tue, 13 Mar 2012 15:45:53 +0100 (CET) Original-Received: from uni-bonn.de (mail.uni-bonn.de [131.220.15.113]) by filter1-til.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id q2DEjqnk018533 for ; Tue, 13 Mar 2012 15:45:53 +0100 Original-Received: from [93.210.231.134] (account tschmit1@uni-bonn.de HELO [192.168.0.26]) by fe2.uni-bonn.de (CommuniGate Pro SMTP 5.4.3) with ESMTPSA id 12048826 for ntg-context@ntg.nl; Tue, 13 Mar 2012 15:45:52 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120216 Thunderbird/10.0.1 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=131.220.15.113; country=DE; region=07; city=Bonn; latitude=50.7333; longitude=7.1000; http://maps.google.com/maps?q=50.7333,7.1000&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 0RGJ2JQyr - 62e1622816cc - 20120313 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 194.171.167.217 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.12 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:75063 Archived-At: Hi all, scenario: for a presentation, I want the background to be a random picture, taken from a directory "backgroundpics." The pictures are numbered consecutively as 1.jpg through 22.jpg. For some complex reasons, it would be easier for me to include these pictures via metafun (I want to add other graphical elements on top). So my question is, how can I pick a random picture? Given the code StartPage ; draw externalfigure "backgoundpics/1" xscaled PaperWidth yscaled PaperHeight ; StopPage ; how can I obtain a random number and make metapost pick the corresponding picture? Sorry, difficult to make a minimal example here... Thomas ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________